Keeping this many BTC in a "hot" wallet is just nutty. I wonder if MtGox keeps that qty online? If the transfer volume really requires so much instantly available then I'd be looking at ways to use offline wallets and cron based transfers to move money between them as needed. Bitcoin has a lot of flexibility in how transactions are created and posted or batched so I think it would be wise for any business doing high volume transfers to seriously look at ways to keep account depth highly controlled.

Your ability to bounce back despite how hard hit is pretty astounding. Profits must be very worthwhile!

We didn't have the opportunity to scan our whole system for suspicious transactions that were not initiated from our customers because we had to shut down the system immediately after we've discovered the huge loss. We did get a rough estimate and we published a press release to warn our users about the deposit address replacement.

However, now we have concluded that we lost 43,554 BTC from this incident and we will reimburse our customers for the full amount. For transparency, we would like to disclose all the suspicious transaction ids in this incident:

I hope you get insurance next time to account for any losses due to theft.

Introducing constraints to the economy only serves to limit what can be economical.

We didn't have the opportunity to scan our whole system for suspicious transactions that were not initiated from our customers because we had to shut down the system immediately after we've discovered the huge loss. We did get a rough estimate and we published a press release to warn our users about the deposit address replacement.

However, now we have concluded that we lost 43,554 BTC from this incident and we will reimburse our customers for the full amount. For transparency, we would like to disclose all the suspicious transaction ids in this incident:

I hope you get insurance next time to account for any losses due to theft.